Data storage machine



May 19, 1964 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 I55 Sheets-Sheet l /09 I02) I l l HEAD l DRIVE MAGNETIC I DISCS SYSTEM A 3 2 W 5/0 me i READ I a CONTROL WRITE CIRCUITS cmcuns -i v ,i l i SHIFT REGISTER 1 1 I k k I KEYBOARD CARD INVENTORS READER PUNCH LOU/5 D. STEVE/Vs j 1 WILLIAM A. GODDARD M W JOHN J. mvorr 1/2 0/ 7 my. I ADDRESS KEYBOARD AM EZ REGISTER REGISTER y 19, 1964 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 35 Sheets-Sheet 2 y 19, 1964 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 35 Sheets-Sheet 3 Illa.

F I 6. 5b

Ill

y 19, 1954 D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE 35 Sheets-Sheet 4 Filed Dec. 24, 1954 RECORD I escoko 0 *1 H0 ans y 1964 D. STEVENS ETAL 3, 4,097

DATA STORAGE MACHINE I55 Sheets-Sheet 5 Filed Dec. 24, 1954 ADDRESS LOCATION jsr cowuu ,l 2n a 3n COLUMNS 0/50 .551 Ear/01v FUNCTION SELECTS SECTOR SEL ECT/ON ONE OF FOUR RECORDS 01v: or 32 DISC-S 0m: $105 an arm? s10:

TRACK "0" r0 bf/ML.

an cou/u/v. LEAST SIDE OF o/sc SIGNIFICANT ONLY} 4rn0R 5m COLUMNS TRACK SELECT/0N x x x x x FIRST FIVE COLUMNS) I 2 3 4 5 -DATA ADDRESS FIG. 8

y 19, 1964 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE $5 Sheets-Sheet 6 Filed Dec. 24, 1954 y 1964 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 I55 Sheets-Sheet 7 gar-m FIG. 14

May 19, 1964 Filed Dec. 24, 1954 L. D. STEVENS ETAL DATA STORAGE MACHINE 35 Sheets-Sheet 8 y 19, 1954 D. STEVENS ETAL 3 ,0 7

DATA STORAGE MACHINE 35 Sheets-Sheet 9 Filed Dec. 24, 1954 y 19, 1954 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 I55 Sheets-Sheet l0 1 20. 4 FIG. I70. H6

[10000000000000 00000000000 lxralnllnuulm WIHHIIIIUIHM IHHHIIVHHH HHHIHH 33331313733151: 53333313353 0 /00 :00 J00 J20 unnunnuuun nnnnnnunnnn I sssssUUflUUUDUU DUUUUUUUUUIJ FIG. 55 FIG. 56'

y 19, 1954 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE 55 Sheets-Sheet 11 Filed Dec. 24, 1954 d 3 ia y 1954 L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE Filed Dec. 24, 1954 55 Sheets-Sheet 12 FIG. 20a

L. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE May 19, 1964 Filed Dec.

.35 Sheets-Sheet 13 y 19, 1954 1.. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE 35 Sheets-Sheet 14 Filed Dec. 24, 1954 flak Mom A": 5111 Lit] {55 Sheecs$heet 15 L. D. STEVENS ETAL DATA STORAGE MACHINE Fl 6. 20 a May 19, 1964 Filed Dec. 24, 1954 y 19, 1964 D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE 55 Sheets-Sheet 16 Filed Dec. 24, 1954 ii i QR A

y 19, 1964 1.. D. STEVENS ETAL 3,134,097

DATA STORAGE MACHINE .35 Sheets-Sheet .18

Filed Dec. 24, 1954 35 mg R3 IRS 23% CR g 3 Rs ha 3 y 19, 1954 L. D. STEVENS ETAL DATA STORAGE MACHINE May 19, 1964 L. D. STEVENS ETAL DATA STORAGE MACHINE Filed Dec. 24, 1954 1 if? 4 J 1 7i) 9 w 5 FIG. 34 FIG. 38 [-76.37 FIG 44 35 Sheets-Sheet 20 HF. 34 FIE. 34 r 7 4 I00 V I50 (ma Fla. 8H6, 49 1 7 gr if 7 4 1 .4 1' 4 l 4?! 4% if F16. 33 FIG. 35 FIG. 30 H6134 H6134 l l I 9 v s I l 1 19 4Z 1 FIG. 34 F1638 FIG. 36 4 z l 150 v (M/y .J 405 mg 9! H6139 FIG-715 1 H6 .15 6 4 a A I 5 x l x J H6115 F/G. 38 FIG. 42

O-IOOV E, .1; 

1. A RANDOM ACCESS MAGNETIC MEMORY DEVICE COMPRISING A PLURALITY OF MAGNETIC DISCS MOUNTED FOR ROTATION UPON A COMMON SHAFT, EACH OF SAID DISCS HAVING A PLURALITY OF CONCENTRIC RECORDING TRACKS ON BOTH OF ITS SURFACES, MEANS FOR CONTINUOUSLY ROTATING SAID SHAFT TO ROTATE SAID DISCS, A TRANSDUCER FOR RECORDING AND REPRODUCING DATA ON SAID TRACKS, MEANS FOR MOVING SAID TRANSDUCER AXIALLY OF SAID DISCS TO SELECTIVELY POSITION SAID TRANSDUCER BETWEEN A SELECTED PAIR OF ADJACENT DISCS, MEANS OPERABLE UPON COMPLETION OF SAID AXIAL POSITIONING OF SAID TRANSDUCER TO MOVE SAID TRANSDUCER RADIALLY BETWEEN SAID SELECTED DISCS TO POSITION SAID TRANSDUCER ADJACENT A SELECTED ONE OF SAID RECORDING TRACKS, AND MEANS RESPONSIVE TO COMPLETION OF SAID RADIAL POSITIONING OPERATION FOR ENERGIZING SAID TRANSDUCER TO MAGNETICALLY COOPERATE WITH SAID SELECTED TRACK. 